加油VOCs排放因子测试方法研究与应用

发布时间：2019-05-06 07:25

【摘要】：加油站VOCs排放是北京市VOCs的主要来源之一,中国、美国环保署、欧洲环境署加油环节的未控制排放因子(UEF)分别是加州空气资源委员会(CARB)加油UEF(1 008 mg·L-1)的2.16、1.31和1.00倍,中国20年来汽油标准发生了变化,急需开展加油VOCs排放因子本地化研究.本研究对比发现欧盟加油排放因子测试方法比CARB简单易操作,借鉴欧盟方法加工了加油VOCs排放因子测试装置,并在北京市某加油站的美国加油油气回收系统(StageⅡ)开展加油VOCs排放因子测试.结果表明:1针对试验油箱,冬夏季加油油气回收效率分别是气液比(A/L)的0.93和0.83倍,夏季加油排放因子大于冬季,且回收效率小于冬季;2针对社会车辆,A/L=0时冬夏季加油UEF分别为(525±42)mg·L-1和(963±174)mg·L-1,分别是CARB加油UEF的0.52倍和0.95倍,冬夏季在A/L为1.05~1.07时的排放因子平均值分别为(55±30)mg·L-1和(112±108)mg·L-1;3选取无油气回收时社会车辆加油UEF作为北京市冬夏季加油UEF,结合试验油箱建立的冬夏季排放因子与A/L的线性方程,计算有油气回收时不同A/L的排放因子.
[Abstract]:VOCs emissions from gas stations are one of the main sources of VOCs in Beijing, China, the U.S. Environmental Protection Agency, The uncontrolled emission factor (UEF) in the refueling process of the European Environment Agency is 2.16,1.31 and 1.00 times higher than that of the California Air Resources Commission (CARB) refueling UEF (1 008 mg 路L-1), respectively. Gasoline standards in China have changed over the past 20 years. There is an urgent need to study the localization of VOCs emission factors for refueling. This study finds that the EU refueling emission factor test method is simpler than the CARB, and uses the EU method for reference to process the refueling VOCs emission factor testing device. Gas recovery system (Stage 鈪，

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